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Technology Stocks : Winstar Comm. (WCII)
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To: Bernard Levy who wrote (4765)4/1/1998 12:17:00 AM
From: SteveG  Read Replies (3) of 12468
 
<... orthogonal multicarrier modulation, which is the technique employed by the discrete multitone (DMT) and discrete wavelet multitone schemes for ADSL/VDSL are extremely interesting since they come very close to achieving the theoretical capacity of a communication channel....>

In figuring Shannon channel capacity, since each frequency has a different signal and noise power spectrum, [with capacity C = log_2 ( 1 + S(f)/N(f) )bits/sec/Hz] are there theoretical SNR values for 38GHz, including "real world" approximations, to figure what additional channel capacity MIGHT be squeezed out with more complex modulation.

And if we restrict modulation to 100MHz channels, do you still envision the need for GaAs, and would this work if greater bandwidth is desired by simply adding channels?

Thanks again.

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